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      date published: 2026-06-13T13:32:09Z
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      date published: 2026-06-13T13:32:09Z
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  track: Piano Concerto No. 22 in E flat, K.482: 3. Allegro - Andante cantabile - Tempo I
  track: Don Giovanni, K.527 / Act 2: "Don Giovanni, a cenar teco m'invitasti"
  track: Die Zauberflöte, K.620 / Act 2: Die Zauberflote, K. 620 - "Ach ich fuhl's"
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track: Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso - Live at Konzerthaus Berlin / 2018
track: Five Variants of "Dives and Lazarus"
track: The Lark Ascending
track: Mozart: Horn Concerto No. 4 in E-Flat Major, K. 495: III. Rondo. Allegro vivace

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Piano Concerto No. 22 in E flat, K.482: 3. Allegro - Andante cantabile - Tempo I
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  date published: 2026-06-13T13:32:09Z
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
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Die Zauberflöte, K.620 / Act 2: Die Zauberflote, K. 620 - "Ach ich fuhl's"
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Requiem in D Minor, K. 626: I. Introitus. Requiem aeternam
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Requiem in D Minor, K. 626: I. Introitus. Requiem aeternam
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Concerto for 2 Pianos in E-Flat Major, K. 365: III. Rondo. Allegro moderato
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by artist: Imogen Cooper
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by artist: Sir Neville Marriner
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:53:06Z
audio: Concerto for 2 Pianos in E-Flat Major, K. 365: III. Rondo. Allegro moderato
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Amadeus (The Complete Soundtrack Recording)
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Handel: Messiah
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Mozart For The Morning Commute - A Lively Bit Of Traveling Music
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date published: 1998-05-05

Bach for Breakfast - The Leisurely Way to Start Your Day
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T13:32:09Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T13:32:09Z
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  subject of: OpenTimestamps Proof of Existence
  audio: Sonata for Violin or Flute and Continuo, No.1 in G Minor BWV 1020 - arr. Flute, Harp, and Cello: 1. (Allegro)
track: Suite No. 1 in C, BWV 1066: 4. Forlane
track: Sonata for Flute or Violin No.4 in C, BWV 1033: 1. Andante - Presto
track: Sonata for Flute or Violin No.4 in C, BWV 1033: 4. Menuet I - II
track: English Suite No. 3 in G minor, BWV 808 - Transcr. for two guitars A. Lagoya: 2. Allemande
track: Suite in E for Lute, BWV 1006a/1000 - Arr. Harp: 3. Gavotte en rondeau
track: Concerto For Violin, Oboe, And Strings In D Minor, BWV 1060 - Arr. For Panpipes From Reconstruction By Max Schneider (1875- 1967): 2. Adagio
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-06-13T12:53:06Z

Sonata for Violin or Flute and Continuo, No.1 in G Minor BWV 1020 - arr. Flute, Harp, and Cello: 1. (Allegro)
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Suite No. 1 in C, BWV 1066: 4. Forlane
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by artist: English Chamber Orchestra
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Suite No. 1 in C, BWV 1066: 4. Forlane
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Sonata for Flute or Violin No.4 in C, BWV 1033: 1. Andante - Presto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
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Sonata for Flute or Violin No.4 in C, BWV 1033: 4. Menuet I - II
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
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English Suite No. 3 in G minor, BWV 808 - Transcr. for two guitars A. Lagoya: 2. Allemande
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: English Suite No. 3 in G minor, BWV 808 - Transcr. for two guitars A. Lagoya: 2. Allemande
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Suite in E for Lute, BWV 1006a/1000 - Arr. Harp: 3. Gavotte en rondeau
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Suite in E for Lute, BWV 1006a/1000 - Arr. Harp: 3. Gavotte en rondeau
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Concerto For Violin, Oboe, And Strings In D Minor, BWV 1060 - Arr. For Panpipes From Reconstruction By Max Schneider (1875- 1967): 2. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
audio: Concerto For Violin, Oboe, And Strings In D Minor, BWV 1060 - Arr. For Panpipes From Reconstruction By Max Schneider (1875- 1967): 2. Adagio
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Oboe d'amore Concerto in A Major, BWV 1055R: I. (Allegro moderato)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T13:32:09Z
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Beethoven: Piano Concerto No. 2 in B-Flat Major, Op. 19: 3. Rondo. Molto allegro (Live at Konzerthaus Berlin / 2018)
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Mozart: Requiem
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track: Requiem in D Minor, K. 626: I. Introitus. Requiem aeternam
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902601
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f2bc5b1ea22ac8c04e17b45458f35505bd2a431f6f4c4d1fd5c23d1898c9b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902601.
    date published: 2026-06-13T13:32:09Z
  audio: Requiem in D Minor, K. 626: I. Introitus. Requiem aeternam
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.031
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.083
    additional property: Energy
      type: PropertyValue
      value: 0.134
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.981
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.868
    additional property: Liveness
      type: PropertyValue
      value: 0.103
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.039
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.187
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Requiem in D Minor, K. 626: II. Kyrie
  type: MusicRecording
  duration: PT2M16S
  duration ms: 136333
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Academy of St Martin in the Fields Chorus
  by artist: Academy of St. Martin in the Fields
  by artist: Sir Neville Marriner
  in album: Mozart: Requiem
    type: MusicAlbum
    date published: 1991-01-01
  popularity: 15
  genre: classical
  genre: classical-era
  isrc code: NLA508902602
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-10T18:40:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x925c20dcedd05797120babe07f2ce31e46d71538a5bb3b2987d8dafbdf3022b9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902602
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925c20dcedd05797120babe07f2ce31e46d71538a5bb3b2987d8dafbdf3022b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902602.
    date published: 2026-06-13T13:32:09Z
  audio: Requiem in D Minor, K. 626: II. Kyrie
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 120.118
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.368
    additional property: Energy
      type: PropertyValue
      value: 0.339
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.987
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.874
    additional property: Liveness
      type: PropertyValue
      value: 0.185
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.508
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.484
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Requiem in D Minor, K. 626: IIIa. Sequentia. Dies irae
  type: MusicRecording
  duration: PT1M55S
  duration ms: 115666
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Academy of St Martin in the Fields Chorus
  by artist: Academy of St. Martin in the Fields
  by artist: Sir Neville Marriner
  in album: Mozart: Requiem
    type: MusicAlbum
    date published: 1991-01-01
  popularity: 16
  genre: classical
  genre: classical-era
  isrc code: NLA508902603
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Requiem in D Minor, K. 626: IIIa. Sequentia. Dies irae
track: Requiem in D Minor, K. 626: IIIb. Sequentia. Tuba mirum
track: Requiem in D Minor, K. 626: IIIc. Sequentia. Rex tremendae
track: Requiem in D Minor, K. 626: IIId. Sequentia. Recordare
track: Requiem in D Minor, K. 626: IIIe. Sequentia. Confutatis
track: Requiem in D Minor, K. 626: IIIf. Sequentia. Lacrimosa
track: Requiem in D Minor, K. 626: IVa. Offertorium. Domine Jesu
track: Requiem in D Minor, K. 626: IVb. Offertorium. Hostias
track: Requiem in D Minor, K. 626: V. Sanctus
track: Requiem in D Minor, K. 626: VI. Benedictus
track: Requiem in D Minor, K. 626: VII. Agnus Dei
track: Requiem in D Minor, K. 626: VIII. Communio: Lux aeterna

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-18T17:45:31+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x4159b7d31aa5a00755e3494aafe59c5ff8489e98826fca1876f80117b1258ee6

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956302

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956302

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902603

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:30:09Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4159b7d31aa5a00755e3494aafe59c5ff8489e98826fca1876f80117b1258ee6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902603.
date published: 2026-07-02T03:30:09Z

Requiem in D Minor, K. 626: IIIa. Sequentia. Dies irae
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 148.961
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.313
additional property: Energy
  type: PropertyValue
  value: 0.361
additional property: Speechiness
  type: PropertyValue
  value: 0.031
additional property: Acousticness
  type: PropertyValue
  value: 0.97
additional property: Instrumentalness
  type: PropertyValue
  value: 0.962
additional property: Liveness
  type: PropertyValue
  value: 0.243
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.428
additional property: Loudness (dB)
  type: PropertyValue
  value: -18.007
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor

Requiem in D Minor, K. 626: IIIb. Sequentia. Tuba mirum
type: MusicRecording
duration: PT3M46S
duration ms: 226000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Robert Lloyd
by artist: Francisco Araiza
by artist: Sylvia McNair
by artist: Carolyn Watkinson
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 14
genre: classical
genre: classical-era
isrc code: NLA508902604
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T04:58:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4dd4b90c37c5baf86e38e39eed986704a8792c80ef3b01253d28cf8a0ca6e19a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902604
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd4b90c37c5baf86e38e39eed986704a8792c80ef3b01253d28cf8a0ca6e19a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902604.
  date published: 2026-07-02T03:30:09Z
audio: Requiem in D Minor, K. 626: IIIb. Sequentia. Tuba mirum
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.158
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.259
  additional property: Energy
    type: PropertyValue
    value: 0.053
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.007
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.06
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.713
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem in D Minor, K. 626: IIIc. Sequentia. Rex tremendae
type: MusicRecording
duration: PT2M16S
duration ms: 136000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Academy of St Martin in the Fields Chorus
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 14
genre: classical
genre: classical-era
isrc code: NLA508902605
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T05:03:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65db8c865b3c6cda940162946e7f2de980991af7507669e9adfc0d86537ca773
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902605
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db8c865b3c6cda940162946e7f2de980991af7507669e9adfc0d86537ca773. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902605.
  date published: 2026-07-02T03:30:09Z
audio: Requiem in D Minor, K. 626: IIIc. Sequentia. Rex tremendae
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.475
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.217
  additional property: Energy
    type: PropertyValue
    value: 0.122
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.821
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.075
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.417
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Requiem in D Minor, K. 626: IIId. Sequentia. Recordare
type: MusicRecording
duration: PT5M47S
duration ms: 347333
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Sylvia McNair
by artist: Carolyn Watkinson
by artist: Francisco Araiza
by artist: Robert Lloyd
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
by artist: Academy of St Martin in the Fields Chorus
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 13
genre: classical
genre: classical-era
isrc code: NLA508902606
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T08:12:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb544c2c9e1501a35b7959f034e6528873d0898d5463d1652d4ed2fbbe9487f8d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902606
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb544c2c9e1501a35b7959f034e6528873d0898d5463d1652d4ed2fbbe9487f8d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902606.
  date published: 2026-07-02T03:30:09Z
audio: Requiem in D Minor, K. 626: IIId. Sequentia. Recordare
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.663
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.163
  additional property: Energy
    type: PropertyValue
    value: 0.087
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.234
  additional property: Liveness
    type: PropertyValue
    value: 0.089
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.068
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.063
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem in D Minor, K. 626: IIIe. Sequentia. Confutatis
type: MusicRecording
duration: PT2M22S
duration ms: 142666
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Academy of St Martin in the Fields Chorus
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 14
genre: classical
genre: classical-era
isrc code: NLA508902607
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T13:31:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d54569a670aaf4a98f3f338a0e1cc1b5c6bbb243da2a71805b1a0c40f873cc6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902607
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d54569a670aaf4a98f3f338a0e1cc1b5c6bbb243da2a71805b1a0c40f873cc6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902607.
  date published: 2026-07-02T03:30:09Z
audio: Requiem in D Minor, K. 626: IIIe. Sequentia. Confutatis
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.313
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.113
  additional property: Energy
    type: PropertyValue
    value: 0.011
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.923
  additional property: Liveness
    type: PropertyValue
    value: 0.113
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.036
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.831
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Requiem in D Minor, K. 626: IIIf. Sequentia. Lacrimosa
type: MusicRecording
duration: PT3M33S
duration ms: 213666
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Academy of St Martin in the Fields Chorus
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 19
genre: classical
genre: classical-era
isrc code: NLA508902608
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T04:58:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d912f3954ea53b543052a6f259f8ec10641f6a6f71ce8f850e75fff8a1b3b5d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902608
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d912f3954ea53b543052a6f259f8ec10641f6a6f71ce8f850e75fff8a1b3b5d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902608.
  date published: 2026-06-13T13:32:09Z
audio: Requiem in D Minor, K. 626: IIIf. Sequentia. Lacrimosa
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.212
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.154
  additional property: Energy
    type: PropertyValue
    value: 0.034
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.831
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.036
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.496
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Requiem in D Minor, K. 626: IVa. Offertorium. Domine Jesu
type: MusicRecording
duration: PT3M27S
duration ms: 207826
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Sylvia McNair
by artist: Carolyn Watkinson
by artist: Francisco Araiza
by artist: Robert Lloyd
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 13
genre: classical
genre: classical-era
isrc code: NLA508902609
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T05:07:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x359ea56180fdbe5642701028b9149baf1dfc741706dc1e8fca8d3a3bde721a43
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902609
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359ea56180fdbe5642701028b9149baf1dfc741706dc1e8fca8d3a3bde721a43. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902609.
  date published: 2026-07-02T03:30:09Z
audio: Requiem in D Minor, K. 626: IVa. Offertorium. Domine Jesu
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.363
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.304
  additional property: Energy
    type: PropertyValue
    value: 0.179
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.32
  additional property: Liveness
    type: PropertyValue
    value: 0.17
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.202
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.73
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Requiem in D Minor, K. 626: IVb. Offertorium. Hostias
type: MusicRecording
duration: PT3M35S
duration ms: 215506
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Academy of St Martin in the Fields Chorus
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 12
genre: classical
genre: classical-era
isrc code: NLA508902610
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T04:13:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x755c48cc9bebf6b961994e890d883c529f281ccb151fcc275712f352a160fe36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902610
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755c48cc9bebf6b961994e890d883c529f281ccb151fcc275712f352a160fe36. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902610.
  date published: 2026-07-02T03:55:08Z
audio: Requiem in D Minor, K. 626: IVb. Offertorium. Hostias
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.514
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.155
  additional property: Energy
    type: PropertyValue
    value: 0.125
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.876
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.044
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.586
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem in D Minor, K. 626: V. Sanctus
type: MusicRecording
duration: PT1M39S
duration ms: 99000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Academy of St Martin in the Fields Chorus
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 12
genre: classical
genre: classical-era
isrc code: NLA508902611
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T20:09:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4689f199f45e2e86abd12b59dbc80d960b6746fb9a9da1824227821730bb212
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902611
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4689f199f45e2e86abd12b59dbc80d960b6746fb9a9da1824227821730bb212. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902611.
  date published: 2026-07-02T03:55:08Z
audio: Requiem in D Minor, K. 626: V. Sanctus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.133
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.131
  additional property: Energy
    type: PropertyValue
    value: 0.269
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.758
  additional property: Liveness
    type: PropertyValue
    value: 0.198
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.201
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.468
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem in D Minor, K. 626: VI. Benedictus
type: MusicRecording
duration: PT5M40S
duration ms: 340000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Sylvia McNair
by artist: Robert Lloyd
by artist: Francisco Araiza
by artist: Carolyn Watkinson
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 11
genre: classical
genre: classical-era
isrc code: NLA508902612
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T09:20:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd5219618bb96ecda2007a97fad12af56419bbc48e844f002150c6aa9beb9504b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902612
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5219618bb96ecda2007a97fad12af56419bbc48e844f002150c6aa9beb9504b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902612.
  date published: 2026-07-02T03:55:08Z
audio: Requiem in D Minor, K. 626: VI. Benedictus
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.794
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.137
  additional property: Energy
    type: PropertyValue
    value: 0.083
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.448
  additional property: Liveness
    type: PropertyValue
    value: 0.18
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.071
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.208
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Requiem in D Minor, K. 626: VII. Agnus Dei
type: MusicRecording
duration: PT3M30S
duration ms: 210200
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Academy of St Martin in the Fields Chorus
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Mozart: Requiem
  type: MusicAlbum
  date published: 1991-01-01
popularity: 10
genre: classical
genre: classical-era
isrc code: NLA508902613
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T09:22:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d097f3aed1af41e454634e2d894204821601289ad26faa2e48d56cabba160ac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902613
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d097f3aed1af41e454634e2d894204821601289ad26faa2e48d56cabba160ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508902613.
  date published: 2026-07-02T03:55:08Z
audio: Requiem in D Minor, K. 626: VII. Agnus Dei
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.433
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.085
  additional property: Energy
    type: PropertyValue
    value: 0.033
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.973
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.033
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.597
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
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Requiem in D Minor, K. 626: VIII. Communio: Lux aeterna
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by artist: Sylvia McNair
by artist: Academy of St Martin in the Fields Chorus
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
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popularity: 11
genre: classical
genre: classical-era
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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Wiener Operettenarien
type: MusicAlbum
date published: 2024-05-03

Mozart: The Works for Flute
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  subject of: OpenTimestamps Proof of Existence
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Mozart: Sinfonia Concertante; Oboe Concerto
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Meyerbeer: Dinorah
type: MusicAlbum
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Mozart: Great Mass in C minor; Ave Verum Corpus
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  by artist: Kiri Te Kanawa
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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Bach, Handel & Marcello: Concertos
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date published: 1984

Schubert: Mass No. 6
type: MusicAlbum
date published: 1975-10-14

Beethoven: Mass in C
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  by artist: Stephen Cleobury
  by artist: George Guest
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    date published: 1974-05-24
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  genre: chamber-music
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  subject of: OpenTimestamps Proof of Existence
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Martin: Orchestral, Choral & Vocal Works.
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Vocalise
type: MusicAlbum
date published: 1998-08-05

Bach: Works for Violin
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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track: Violin Concerto in E Major, BWV 1042: I. Allegro
track: Violin Concerto in E Major, BWV 1042: II. Adagio
track: Violin Concerto in E Major, BWV 1042: III. Allegro assai
track: Violin Partita No. 2 in D Minor, BWV 1004: V. Chaconne (Arr. J. Milone for Violin & Orchestra)
track: Orchestral Suite No. 3 in D major, BWV 1068: II. Air
track: Violin Partita No. 3 in E Major, BWV 1006: III. Gavotte en rondeau (Arr. J. Milone for Violin & Orchestra)

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date published: 2026-07-02T03:30:09Z

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Violin Concerto in E Major, BWV 1042: I. Allegro
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  date published: 2026-06-13T13:32:09Z
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Violin Concerto in E Major, BWV 1042: II. Adagio
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  date published: 2026-07-02T03:30:09Z
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Violin Concerto in E Major, BWV 1042: III. Allegro assai
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
audio: Violin Concerto in E Major, BWV 1042: III. Allegro assai
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Violin Partita No. 2 in D Minor, BWV 1004: V. Chaconne (Arr. J. Milone for Violin & Orchestra)
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  date published: 2026-07-02T03:30:09Z
audio: Violin Partita No. 2 in D Minor, BWV 1004: V. Chaconne (Arr. J. Milone for Violin & Orchestra)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
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Violin Partita No. 3 in E Major, BWV 1006: III. Gavotte en rondeau (Arr. J. Milone for Violin & Orchestra)
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c24e3540a01a3afca83ba4823f06bc4ea1533bc429ecd7204fcab7b7610069b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10800897.
  date published: 2026-07-02T16:51:38Z
audio: Violin Sonata in G Minor "Devil's Trill"
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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Romance of the Violin
type: MusicAlbum
date published: 2003-10-17
track: The Girl with Flaxen Hair
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  by artist: Claude Debussy
  by artist: Joshua Bell
  by artist: Michael Stern
  by artist: Academy of St. Martin in the Fields
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    type: MusicAlbum
    date published: 2003-10-17
  popularity: 27
  genre: classical
  genre: impressionism
  genre: post-romantic-era
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10310662
  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-06-13T12:53:06Z
  audio: The Girl with Flaxen Hair
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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track: Serenade, D. 957, No. 4
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  duration: PT3M47S
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  by artist: Franz Schubert
  by artist: Joshua Bell
  by artist: Academy of St. Martin in the Fields
  by artist: Michael Stern
  by artist: Craig Ogden
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    type: MusicAlbum
    date published: 2003-10-17
  popularity: 33
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-06-13T12:47:07Z
  audio: Serenade, D. 957, No. 4
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track: Orfeo ed Euridice, Wq. 30: Dance of the Blessed Spirits (Arranged for Violin & Orchestra)
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  duration: PT3M53S
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  by artist: Christoph Willibald Gluck
  by artist: Joshua Bell
  by artist: Michael Stern
  by artist: Academy of St. Martin in the Fields
  in album: Romance of the Violin
    type: MusicAlbum
    date published: 2003-10-17
  popularity: 20
  genre: classical
  genre: opera
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  subject of: OpenTimestamps Proof of Existence
  audio: Orfeo ed Euridice, Wq. 30: Dance of the Blessed Spirits (Arranged for Violin & Orchestra)
track: String Quartet No. 2 in D Major: III. Nocturne

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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/953520

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10310666

OTSTimestamp
type: PropertyValue
value: 2026-06-13T13:32:09Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc07dc738216beab2ab52f36004eec0bf6648642331407f6a80cb0ac39b5a550. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10310666.
date published: 2026-06-13T13:32:09Z

Orfeo ed Euridice, Wq. 30: Dance of the Blessed Spirits (Arranged for Violin & Orchestra)
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Valence (Positivity)
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String Quartet No. 2 in D Major: III. Nocturne
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duration: PT6M38S
duration ms: 398493
explicit: false
by artist: Alexander Borodin
by artist: Joshua Bell
by artist: Michael Stern
by artist: Academy of St. Martin in the Fields
in album: Romance of the Violin
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popularity: 20
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9618e45df8a353083e5b388945f9cb32987f1596046cab1de2d71e43bee881. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10310669.
  date published: 2026-06-13T15:41:10Z
audio: String Quartet No. 2 in D Major: III. Nocturne
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Acousticness
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Schubert: Mass No. 5
type: MusicAlbum
date published: 1977-10-23

Vivaldi: Gloria; Pergolesi: Magnificat
type: MusicAlbum
date published: 1966-08-01

Handel: Feuerwerkmusik, Wassermusik & Concerti grossi, Op. 3
type: MusicAlbum
date published: 2011-10-04

Academy of St Martin in the Fields - Vivaldi
type: MusicAlbum
date published: 2023-02-10

Academy of St Martin in the Fields - Bach
type: MusicAlbum
date published: 2023-11-16

Bach - Air - Suite No.3
type: MusicAlbum
date published: 2016-11-18

Bach, J.S.: Brandenburg Concertos / Orchestral Suites / Violin Concertos
type: MusicAlbum
date published: 2002-01-01

Handel: Jephtha
type: MusicAlbum
date published: 1979

Meyerbeer: L'esule di Granata (Highlights)
type: MusicAlbum
date published: 2005-01-01

Piano Music of Dinu Lipatti
type: MusicAlbum
date published: 2012-11-05

Haydn: Symphonies Nos. 6, 7, & 8
type: MusicAlbum
date published: 1982-01-01
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  by artist: Academy of St. Martin in the Fields
  by artist: Sir Neville Marriner
  by artist: Denis Vigay
  by artist: Raymund Koster
  by artist: Susan Milan
  by artist: Graham Sheen
  by artist: Iona Brown
  by artist: Kenneth Sillito
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  additional property: CopyrightRegisteredAt
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-02T03:55:08Z
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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Haydn: 29 Named Symphonies
type: MusicAlbum
date published: 1996-01-01

Vivaldi: The Four Seasons etc
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  by artist: Sir Neville Marriner
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  additional property: OTSVerificationAPI
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    date published: 2026-07-22T17:48:40Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T06:56:49Z
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  subject of: OpenTimestamps Proof of Existence
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track: Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 3. Allegro
track: Bassoon Concerto in A Minor, RV 498 - Ed. Christopher Hogwood: 1. Allegro (ma molto moderato)

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T03:55:08Z

Violin Concerto in F Major, Op. 8, No. 3, RV 293 "L'autunno": 1. Allegro
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Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 3. Allegro
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 3. Allegro
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Bassoon Concerto in A Minor, RV 498 - Ed. Christopher Hogwood: 1. Allegro (ma molto moderato)
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Bassoon Concerto in A Minor, RV 498 - Ed. Christopher Hogwood: 1. Allegro (ma molto moderato)
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Elgar: Piano Quintet; The Spanish Lady; La Capricieuse; Serenade Op. 20
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date published: 2016-06-03
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T12:53:06Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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track: Elegy, Op. 58

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Serenade for strings in E Minor, Op. 20: III. Allegretto
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Elegy, Op. 58
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audio: Elegy, Op. 58
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Marriner & The Academy - 20th Century Classics
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Mozart: The Piano Concertos (12 CDs, Vol.7 of 45)
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Boccherini: Gitarren-Quintette
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Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso - Live at Konzerthaus Berlin / 2018
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  date published: 2026-06-13T12:47:07Z
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Five Variants of "Dives and Lazarus"
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The Lark Ascending
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subject of: OpenTimestamps Proof of Existence
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Mozart: Horn Concerto No. 4 in E-Flat Major, K. 495: III. Rondo. Allegro vivace
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